<![CDATA[Amusium pleuronectes is a bivalve species commonly found in Indonesia and has potential as a source of filler material for composite applications. This study investigated the effect of degassing time on the physical and mechanical properties of epoxy resin composites filled with Amusium pleuronectes shell powder. Shell powder with a mesh size of 100 was incorporated at 35% of the total mixture volume, consisting of epoxy resin, hardener, and filler. Degassing was performed using a sonicator for 5, 10, and 15 minutes. The composites were characterized through porosity, macrographic, tensile, and impact tests, with three specimens prepared for each variation. The results showed that 10 minutes of degassing produced the highest tensile strength (29.63 N/mm²) and impact toughness (0.051 J/mm²). In contrast, the highest yield strength and Young’s modulus were obtained at 5 minutes of degassing. These findings indicate that 10 minutes of degassing provides the best balance between tensile strength and impact toughness, demonstrating the potential of shell waste as a filler for epoxy-based composite materials.]]>
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